Mop up

Please mop up the spilled milk.

Source: wiktionary

And though Fightville, an MMA documentary from the directors of the fine Iraq War doc Gunner Palace, presents it more than fairly, the sight of a makeshift ring getting constructed on a Louisiana rodeo ground does little to shake the label. Nor do the shots of ringside assistants with spray bottles and rags, mopping up the blood between rounds

Source: wiktionary

There's no sense in trying to mop up a free-flowing river.

Source: wiktionary

We went through to the kitchen and draped Bob's shaking arm over a thick white beach towel to mop up the blood, but even I wasn't prepared for what I saw next

Source: wiktionary